Every 6 hours, all 5 spirit towers will become uncontrolled and capturable by standing near the tower until the bar fills in the direction of your side. If there are more players on your side it will move faster.

Once all 5 towers have been captured by a single faction, they will become uncapturable and the Bones Wastes will be considered under the control of the winning faction for 6 hours. While the Bone Wastes are under a faction's control, players of that faction will get the buff "Blessing of Auchindoun" which allows them to loot spirit shards from bosses in Auchindoun.